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How to change a cam sensor?

Discussion in 'A4/S4 forum(B5 Chassis)' started by simon rampton, May 26, 2013.

  1. simon rampton
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    simon rampton New Member

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    [May 26, 2013]
    I have a 1998 a4 1.8t avant, and after taking it to audi for a diagnostic and service they said that there are 2 faults which are:-


    THE CAM SENSOR: Is this just a straight unbolt and bolt on job or is it more complicated than that?

    THE WASTEGATE VALVE: Think this is out of my league.

    Any comments and advice will be greatly appreciated thanks.
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  3. AR-rkon
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    AR-rkon Midlands regional Moderator Regional Rep

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    [May 26, 2013]
    The 1.8t cam sensor is two 10mm bolts and a plug. thats it.... 10min job :icon_thumright:

    It depends what they refer to as the wastegate valve, if its:
    • the N75 (electrical solenoid), fiddly but can be done quite easily
    • the Wastegate actuator, turbo has to come off to change it.
    • the wastegate flap (usually rattles), again, whichever route its turbo off. Either replace turbo, or as i did, find a good condition exhaust housing and swap it.
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  4. simon rampton
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    simon rampton New Member

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    [May 28, 2013]
    The code was N75.
    I'm not too bad with amatuer mechanics but i would'nt say im a professional at all.
    Do you think its possible to fix at home or is it best to take it to a garage,
    A home fix would be better as the garages are very expensive and also its a learning curve.
    Thanks for your help.
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  5. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [May 28, 2013]
    N75 is an easy DIY fix. Could be a broken wire though, rather than a faulty valve.
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